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The problem of recovering an image from its Fourier-transform phase quantized to one bit, or, equivalently, finding the locations of the zero crossings of the real part of the Fourier transform,... View More

The problem of recovering an image from its Fourier-transform phase quantized to one bit, or, equivalently, finding the locations of the zero crossings of the real part of the Fourier transform, is addressed. Theoretical results are presented that set an algebraic condition under which real zero crossings uniquely specify a band-limited image. It is then shown that sampling in the frequency domain presents a major obstacle to obtaining good reconstruction results. The one-bit Fourier phase reconstruction problem is then considered when the original image is coherent, i.e. the image phase is random and highly uncorrelated. Examples are given which demonstrate that the information loss produced by frequency sampling is not as severe as that in the nonclassical problem. Motivated by digital phase-only holograms, a known random diffuser is used as the image phase and a well-known iterative reconstruction procedure is extended to incorporate the knowledge of the image phase at each stage of the iteration. This reconstruction method produces good image quality by using a few iterations, unlike its noncoherent counterpart.<>

Removal of cloud cover on the satellite remote sensing image can effectively improve the availability of remote sensing images. For thin cloud cover, support vector value contourlet transform is used to achieve multi-scale decomposition of the area of thin cloud cover on remote sensing images. Throu...

This paper gives an efficient approach to reconstruct moving multiple objects (multi-object). Each object has independently rigid motion which includes translation and rotation. The traditional FBP algorithm can resolve the one-object motion problem rather well. However, it suffers from perceptible ...

How to improve the probability of registration and precision of localization is a hard problem, which is desiderated to solve. The two basic approaches (normalized cross-correlation and phase correlation) for image registration are analysed, two improved approaches based on spatial-temporal relation...

The problem of partial stability is investigated for a class of continuous-time large-scale systems. Under assumption that the null solution of the isolated subsystems is stable, based on decomposition-aggregation methods and Lyapunov second method, some theorems concerning the globally partial asym...